Complex hydrogen-bonded cations. X-ray crystal structure of benzylammonium tetrachloroaluminate chloride, [((C6H5CH2)NH3)4Cl][AlCl4]3, and its relevance to the structure of basic chloroaluminate room-temperature melts

Dubois, Raymond H.; Zaworotko, Michael J.; White, Peter S.

doi:10.1021/ic00310a001

Cited by 26 publications

(4 citation statements)

References 7 publications

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“…Ionic liquids are arbitrarily defined as salts with melting points below 100 °C . The structures of the component ions contribute to the low observed melting points with both anions and cations generally being large and charge diffuse; the cations are frequently also asymmetric, with the charge borne by either a nitrogen or phosphorus centre . Representative ions are shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

NMR spectroscopy to follow reaction progress in ionic liquids

Butler

Thomas

Hook

et al. 2014

Magnetic Reson in Chemistry

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In order to understand reaction outcomes in ionic liquids, it is crucial to be able to follow the progress of these reactions. This review highlights the advantages of NMR spectroscopy over other analytical techniques in following reaction progress in ionic liquids, particularly addressing the practical aspects of the methodology and highlighting the range of processes that can be readily followed. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

NMR spectroscopy to follow reaction progress in ionic liquids

Butler

Thomas

Hook

et al. 2014

Magnetic Reson in Chemistry

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“…Organic reactivity in ionic liquids is often reported to differ from that observed in molecular solvents., 1 ‡ Ionic liquids, which are typically made up of a bulky organic cation and a charge diffuse anion, [2][3][4][5][6] have numerous advantages over molecular solvents, not least very low vapour pressures 2,7 and the ability to change solvent properties through modification of the components. [5][6][7][8][9][10] However, the widespread application of these room temperature molten salts for synthetic purposes is currently restricted by the limited understanding of the underlying principals that govern reactivity in these solvents.…”

Section: Introductionmentioning

confidence: 99%

Investigating the origin of entropy-derived rate accelerations in ionic liquids

2012

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The effects on the rate and activation parameters of a series of Menschutkin processes on changing from a molecular solvent to an ionic liquid were investigated. The removal of delocalised pi-systems from the reagents does not affect the change in activation parameters on changing solvent. In each of the cases investigated, rate accelerations observed on moving to the ionic liquid could be attributed to an increase in reaction entropy. This suggests a specific interaction of the ionic liquid with the nucleophilic centre, rather than the delocalised pi-systems of either the electrophile or the nucleophile.

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“…Ionic liquids are defined as molten salts that are liquid below 100 1C. 1 The combination of bulky, charge-diffuse cations and anions [2][3][4][5][6] frustrates crystallisation, while the electrostatic forces between the ions results in very low vapour pressures. 7 This, in combination with the ability to alter an ionic liquid's properties through variation of the constituent ions, 5,6,[8][9][10][11] has seen these systems proposed as alternatives to organic solvents.…”

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confidence: 99%